The 2023 Seattle Sea Dragons season was the second season for the Seattle Sea Dragons as a professional American football franchise. They played as charter members of the XFL, one of eight teams to compete in the league for the 2023 season. The Sea Dragons played their home games at the Lumen Field and were led by head coach Jim Haslett.

The Sea Dragons had changed their franchise name from Seattle Dragons to Seattle Sea Dragons prior to the 2023 season.

Earning their first playoff berth and clinching second place in the North Division, the Sea Dragons were eliminated by the DC Defenders in the North Division title game in the playoffs.